EP2682258A1 - Procédé et dispositif d'imprégnation de bandes de tissu à plusieurs couches - Google Patents

Procédé et dispositif d'imprégnation de bandes de tissu à plusieurs couches Download PDF

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Publication number
EP2682258A1
EP2682258A1 EP13170610.3A EP13170610A EP2682258A1 EP 2682258 A1 EP2682258 A1 EP 2682258A1 EP 13170610 A EP13170610 A EP 13170610A EP 2682258 A1 EP2682258 A1 EP 2682258A1
Authority
EP
European Patent Office
Prior art keywords
embossing
roller
embossed
tissue web
gap
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP13170610.3A
Other languages
German (de)
English (en)
Inventor
Hardy Wolfgang Klose
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Unima Tec Pragesysteme GmbH
Original Assignee
Unima Tec Pragesysteme GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Unima Tec Pragesysteme GmbH filed Critical Unima Tec Pragesysteme GmbH
Publication of EP2682258A1 publication Critical patent/EP2682258A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/07—Embossing, i.e. producing impressions formed by locally deep-drawing, e.g. using rolls provided with complementary profiles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F2201/00—Mechanical deformation of paper or cardboard without removing material
    • B31F2201/07—Embossing
    • B31F2201/0771—Other aspects of the embossing operations
    • B31F2201/0774—Multiple successive embossing operations

Definitions

  • the invention relates to a method for embossing multi-layered tissue webs of a predetermined width, in which at least two layers of the tissue web pass through a first embossing gap between an embossing roller provided at least in regions with a raised embossing pattern and a first counter-roller having an elastically yielding surface and in Direction of the first counter-roller raised projections are embossed in the tissue web according to the embossing pattern and then the thus embossed layers of the tissue web on the embossing roller resting on a second embossing gap between the embossing roller and a second counter-roller.
  • the object of the invention is therefore to propose a method and a device which avoids the disadvantages of the prior art.
  • the invention proposes that the second mating roll is designed to form the second embossing gap with a stiff and elastically non-compliant surface and in the second embossing gap a locally limited re-embossing of the point-to-surface type in the region of the raised projections is effected.
  • the stamping pressure prevailing in the first nip is in this case advantageously adjustable, so that as the stamping pressure increases, the volume produced in the tissue web is correspondingly increased.
  • the individual embossed layers of the tissue web only experience an increase in volume after leaving the first embossing gap in the region of the raised projections formed by the embossing, but not a significant adherent connection with the adjacent layers.
  • the layers thus embossed continue to rest on the embossing roll, i.
  • the tissue web thus obtained in accordance with the present invention is very similar to a Union embossed web, except that the ply adhesion is effected only on the raised areas of the tissue web. In this way it is possible to make the volume, ie the height of the forming raised projections very variable, without affecting the ply adhesion.
  • the ply adhesion is always effected according to the invention uniformly over the stamping in the second nip. It is irrelevant whether the tissue web is embossed over the entire surface or - as is common, for example, with paper napkins or handkerchiefs - only in the marginal area.
  • a further possible variant of the method according to the invention provides that after passing through the first embossing gap at least one further layer is placed on the embossed layers of the tissue web and these pass through the second embossing gap together, wherein the at least one further layer by means of the imprint in Area of the raised projections with the embossed layers is firmly bonded. Therefore, this at least one further layer does not have an embossing originating from the first embossing nip and forms a smooth covering layer on the embossed layers of the tissue web and is adhered firmly together with these in the second nip in the region of the raised projections without it the addition of adhesives is needed. This gives a very smooth-surfaced tissue web from both sides, the individual layers of which are bonded to the embossed layers in the region of the raised protrusions in the region of the raised protrusions in the second nip without any adhesive.
  • This embossment according to the invention has the advantage that the relatively coarsely embossed structure side of a volume embossing by one or more unembossed material layers, which are embossed in a point / surface embossing station with the or the separately embossed layers into a unit, so that a smooth bottom regardless of how high or rough the previously embossed structure is.
  • the multi-ply web which consists for example of several layers of tissue webs when a smooth side is to be generated, coming from the settlement through a ply separation station and on the number of layers for the lower smooth side and the upper to be embossed Page shared. It is understood that the top and bottom can also be reversed.
  • the thus divided materials which may be carried out to x-ply, are then fed to the individual embossing stations, if necessary, even web guide elements, such as a side edge control, pulleys, etc., can be integrated.
  • the one of the divided material webs passes through an additional embossing station and is fed to the embossing nip of the embossing according to the invention in the second embossing nip lying on the positively engraved steel roller following the embossing (volume embossing).
  • the other material web resulting from the division is conveyed via web guiding elements, e.g. Deflection rollers or side edge control also supplied to the second embossing gap of the dot / surface embossing.
  • the two material webs i.
  • the already embossed single- or multi-ply web and the other still smooth and also single-layer or multi-layered web formed into a composite i. the individual layers of both web halves, namely the embossed embossing elements projecting upwards in the material, are embossed on the upstanding surface point with the smooth unembossed material to form a unit.
  • This embossing is done as usual under pressure in the point / surface embossing and there is an arrest of the individual layers to each other without the addition of glue.
  • the embossing roller and the first and second counter-rollers extend over the entire width of the tissue web.
  • these are preferably supported on one another via races, as shown in FIG EP 1 080 876 A1 is described in detail and the disclosure content of which is expressly referred to in this context.
  • the second embossing gap is arranged downstream of at least one further embossing gap between the embossing roller and a further roller, which is traversed by the resting on the embossing roller tissue web.
  • this at least one further embossing gap for example, a localized individual element can be embossed into the tissue web.
  • the localized individual element of the further roller may, depending on the purpose, have a different or the same engraving height as the embossing roller, the engraving itself may e.g. Engraving elements or lettering include.
  • the method according to the invention described above can be installed in a simple manner in almost any existing embossing station. Additional embossing rollers, which act against the smooth second counter-roller, are possible and conceivable.
  • logo or element embossing can be supplemented or made possible.
  • FIG. 1 there is shown a method of embossing multi-ply tissue webs wherein a tissue web 100 comprising at least two plies is fed to a first nip A which is sandwiched between an embossing roll 1 having a raised embossing pattern 10 and a first counter-roll 2 having an elastically yielding surface is formed.
  • This elastically yielding surface may be formed, for example, by a rubber coating of the roll surface of the counter-roller 2.
  • the embossed pattern 10 is embossed in the supplied layers of the tissue web 100, as in more detail from the FIG. 4 can be seen, wherein the individual layers of the tissue web are denoted by 100.1 and 100.2.
  • the superimposed tissue layers 100.1 and 100.2 After leaving the first embossing nip A, the superimposed tissue layers 100.1 and 100.2 have a course which follows the embossing pattern 10 of the embossing roller 1 by embossing raised projections in the direction of the first counter-roller 2 in the tissue web according to the embossing pattern.
  • the thus embossed layers of the tissue web on the embossing roll 1 are further supplied superimposed to a second embossing gap B, which is formed between the further guiding the tissue web 100 serving embossing roller 1 and another, referred to as second counter roll 3 roller.
  • the raised structures of the embossing pattern 10 formed on the surface of the embossing roller 1 are furthermore in engagement with the raised projections in the tissue web 100.
  • the second counter-roller 3 is designed with a stiff and elastically non-compliant surface, eg a polished steel surface, so that in the second embossing gap an embossing of the already introduced embossing pattern of the point-to-surface type exclusively in the region of raised projections is effected.
  • the tissue web receives no further embossing pattern when passing through the second embossing gap B, but the individual layers 100.1, 100.2 are in the region of the already formed raised projections by a point-surface pressure in the FIG. 4 103 marked area pressed so strong that sets a sufficient adhesive bond between the layers 100.1, 100.2.
  • the adherent bond exists only in the area 103, but not in the previously unembossed areas in which the individual tissue layers 100.1, 100.2 still lie loosely on each other.
  • a product of a tissue web is obtained from several layers 100.1, 100.2, which is very suitable, for example, for use as a paper napkin or handkerchief and has been embossed similar to a Unionwalzengargung, but with the difference that the ply adhesion only on the upstanding surface 103 of the embossing is generated.
  • the volume of the embossing that is to say the degree with which the protruding areas 103 project beyond the further or other course of the tissue layers 100.1, 100.2, can be determined variably and simply by varying the pressing pressure in the first nip A accordingly, however, this does not affect ply adhesion.
  • By ensuring a sufficient pressing pressure in the nip B it is ensured that the individual layers 100.1, 100.2 are adequately interconnected independently of the volume of the embossing.
  • a tissue web is produced, which is characterized by two smooth surfaces with comparable ply adhesion.
  • a layer connection according to the aforementioned embodiment in FIG. 1 Namely, there is a certain roughness of the surface to accept that the upstanding areas or raised projections 103, while in the embodiment according to FIG. 4 corresponding bottom feels relatively smooth.
  • the embodiment according to FIG. 2 the supplied multi-layered tissue web 100 is first divided into a layer separating device 5 into a first and second partial web 101 or 102, which may each comprise a plurality of layers of the tissue web, but may also each comprise only a single layer of the tissue web.
  • the first partial web 101 passes through the first embossing gap A between the embossing roller 1 and the smooth counter-roller 2 provided with an elastically yielding surface as already described with reference to the exemplary embodiment FIG. 1 Described and accordingly receives an embossing pattern with raised projections corresponding to the embossing pattern 10 of the embossing roll. 1
  • the previously divided second sub-web 102 is likewise fed to the embossing gap B via the deflection rolls 4, like the first sub-web 101 resting on the embossing roll 1 both partial webs 101, 102 pass through the embossing gap together.
  • the first partial web 101 is already embossed, while the second partial web 102 is present unembossed.
  • a dot-surface embossing is performed in the region of the raised projections 103, whereby not only, as already described with reference to FIGS FIG. 4 described, the individual layers 100.1, 100.2 of the first partial web 101 are connected to each other in the region of the raised projections 103, but also the unembossed second partial web 102 is in the region of these raised projections 103 firmly connected to the individual layers 100.1, 100.2 of the first partial web 101.
  • the result is thus a product of a multi-layered tissue web, which is relatively smooth on the top and bottom.
  • the haptic perception is many times better than at a normal embossment with a negative smooth side and a positive rough side, such as out FIG. 4 seen.
  • tissue webs have hitherto been produced only with the aid of adhesives or glue, but the method according to the invention makes it possible reliably to produce such a web without the aid of adhesive or glue due to the stamping in the second embossing gap of the point-to-face type.
  • embossings of the tissue web according to the invention in embossing gap A for the embossing of so-called formats, as they are from the supervision in accordance with FIG. 6 are apparent and are needed eg for the napkin or tissue production. It can be seen on the basis of the exemplary illustration of a tissue web 100 that embossings 103 are arranged only in the manner of a grid in the edge area of tissue web 100, while large parts of the tissue web are unembossed, that is to say that in this area the individual layers are not embossed connected with each other.
  • the indicated by arrow feed direction in the illustrated embodiment according to FIG. 6 also be chosen differently and it is also possible to create several such embossing patterns side by side across the width of the tissue web. All of the embossing and counterrolls 1, 2 and 3 shown extend over the entire width of the tissue web 100.
  • this embossing roll 6 can have an embossed structure on your part and locally provide the layers of the tissue web which are already connected to one another with a single element which is embossed into the surface, for example that in FIG FIG. 6 stellversanned shown in a corner area logo 104. It is understood that the embossing roll 1 in this Area in which the embossing roller 6 acts, should have a corresponding compliant surface or a recess.
  • embossing rollers which operate according to the above-explained method

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
  • Paper (AREA)
EP13170610.3A 2012-07-06 2013-06-05 Procédé et dispositif d'imprégnation de bandes de tissu à plusieurs couches Withdrawn EP2682258A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102012013329 2012-07-06

Publications (1)

Publication Number Publication Date
EP2682258A1 true EP2682258A1 (fr) 2014-01-08

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EP13170610.3A Withdrawn EP2682258A1 (fr) 2012-07-06 2013-06-05 Procédé et dispositif d'imprégnation de bandes de tissu à plusieurs couches

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1080876A1 (fr) 1999-08-26 2001-03-07 UniMaTec Prägwalzen und Maschinenbau GmbH Dispositif pour gaufrer une bande de matière
US6245273B1 (en) * 1998-12-30 2001-06-12 Kimberly-Clark Worldwide, Inc. Method for embossing and crimping a multi-layer sheet material web assembly
US20060278356A1 (en) * 2005-06-08 2006-12-14 The Procter & Gamble Company Embossing process including discrete and linear embossing elements
US20100006247A1 (en) 2006-09-27 2010-01-14 Georgia-Pacific France Method And Installation For The Combination Of Plies Forming An Absorbent Sheet

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6245273B1 (en) * 1998-12-30 2001-06-12 Kimberly-Clark Worldwide, Inc. Method for embossing and crimping a multi-layer sheet material web assembly
EP1080876A1 (fr) 1999-08-26 2001-03-07 UniMaTec Prägwalzen und Maschinenbau GmbH Dispositif pour gaufrer une bande de matière
US20060278356A1 (en) * 2005-06-08 2006-12-14 The Procter & Gamble Company Embossing process including discrete and linear embossing elements
US20100006247A1 (en) 2006-09-27 2010-01-14 Georgia-Pacific France Method And Installation For The Combination Of Plies Forming An Absorbent Sheet

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